Question

If you earn $18 and receive a pay increase of 12% how much money will you make?

Answer 1

The answer is `$18+$2.16=$20.16`

Remember: `12%-=12/100`

You should calculate `12%` of `18` and add it up to `18` to find the new salary.

To calculate `12%` of `18`:

If you earn `$100` you would receive `$12` pay increase. But you earn `$18` so we don't know the increase (lets call it `k`)

Since `12%` is always `12%`:

`12/100=k/18`

`k = 18*(12/100) = (18*12)/100 = 216/100=2.16`

As you can see in this step, if you want to know `x` percent of something, you can just multiply something with `x/100`.

The answer is `$18+$2.16=$20.16`